Gas-regulator.



E. G. OFELDT.

GAS REGULATOR.

APPLICATION FILED OCT-16.1915

km Q A W WW J L T Z/ 7 m if 7 l I u w m If S f0 9 2 l/VVENTOR A tlorneyPatented Sept. 5, 1916.

ERNEST G. OFELDT, F NYACK, NEW YORK.

GAS-REGULATOR.

modest.

App1ication filed October 16, 1915.

To all whom it may concern Be it known that I, ERNEST G. OFELDT, acitizen of the United States, and a resident of Nyack, in the county ofRockland and State of New York, have invented certain new and usefulImprovements in Gas-Regulators; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to improvements in gas regulators and moreparticularly to such as are controlled by the pressure of steam from aboiler furnace, to which latter the gas is supplied as fuel,-one objectof the invention being to provide a simple, light regulator, which shallbe accurate in operation; not liable to leak and which will effectuallyprevent the commingling of steam or water with the gas in the event ofbreakage of the part against which the steam pressure operates.

lVith this and other objects in view the invention consists in certainnovel features of construction and combinations of parts as hereinafterset forth and pointed out in the claims.

In the accompanying drawings, Figure 1 is a sectional view of aregulator embodying my improvements, and Fig. 2 is a detail viewillustrating the spacing ring.

My improved regulator comprises upper and lower convex plates 1, 2,thelower plate being made with a central hollow enlargement 3 having aninlet 1 for steam conducted from a boiler by means of suitable pipeconnections, not shown. The upper plate 1 is formed with tubularenlargement 5 forming a gas outlet duct adapted for the reception of asuitable pipe connection. The upper plate 1 is formed with an upwardlyprojecting cylindrical portion 6 provided in its side wall with a gasinlet nipple 7 adapted for attachment of a suitable gas inlet pipe.

Two metal diaphragms 8-9 are disposed between the plates and spacedapart, one above the other. The central portions of these diaphragms areheld properly spaced apart by means of a spacing block 10 rivcted to theupper diaphragm 8, while the peripheral portions of said diaphragms arelocated between the parallel peripheral portions of the plates 1-2 ofthe valve casing and said peripheral portions of the dia- Specificationof Letters Patent.

Patented Sept. 5, 1216.

Serial No. 56,272.

phragms are separated by a spacing ring 11 disposed between them.Suitable fastening means will be provided to secure the plate 12,spacing ring and diaphragms in place. The spacing ring is made with oneor more radial holes 12 for a purpose hereinafter explained. The upperplate 1 is provided at the lower end of the cylindrical extension 6 withan annular flange formmg a valve seat 13 against which a valve 1dresting on the upper diaphragm 8, may seat.

The upper end of the cylindrical extension is made with a head 15 havingan ex ternally threaded portion 16 and a threaded opening, through whichlatter the upper enlarged, threaded portion 17 of a sleeve 18 isadjustable. The sleeve 17-18 serves as a guide for the stem 19 of valve14: and the '1 upper end of said stem passes freely through a nut 20formed upon the head 17 of sleeve 18. A spring 21 encircles the sleeve18 and bears at its respective ends against the head 17 of said sleeveand the valve 14,-adjustment of the tension of said spring beingeffected by adjustment of the head 17 of the sleeve 18 through thethreaded opening in the head of the cylindrical extension 6, andretained in any de sired adjustment by means of a jam nut 22. The upperend of the valve stem is threaded for the reception of a nut 20, wherebymeans are provided to take the strain of the spring off the diaphragmswhen the regulator is not in use. The upper portions of the sleeve head17 and valve stem are inclosed by a cap 23 threaded on the portion 16 ofthe head of the cylirulrical extension 6 and this cap may be made with anut 24. The cap serves, not only to protect the projecting parts at theupper end of the cylindrical extension, but it also serves to preventleakage of gas from the regulator.

The upper diaphragm 8, receives the gas pressure, while the pressure ofthe steam is against the lower diaphragm. Should the lower diaphragmbreak, steam or water would enter the chamber between the diaphragms andfind an exit through the holes or ducts 12 in the spacing ring,-thuspreventing steam or water from reaching the gas chamber over the upperdiaphragm 8.

Slight changes might be made in the details of construction of myinvention without departing from the spirit thereof or limiting itsscope and hence I do not wish to restrict myself to the precise detailsherein set forth.

Having fully described my invention what I claim as new and desire tosecure by Letters-Patent, is

1. In a gas regulator, the combination of a casing comprising upper andlower convex plates and a cylindrical extension on the upper plate, saidupper plate "a'ndcylindrical extension having gas outlet and inlet portsrespectively and the lower plate having a fluid pressure inlet port, avalve seat on the upper plate, two diaphragms between said plates andspaced apart, a perforated ring between the peripheral portions of thediaphragms, a valve mounted on the upper diaphragm, a stem on saidvalve, a guide sleeve for said stem in the cylindrical extension, aspring between said guide sleeve and the valve, and means permittingadjustment of said guide sleeve to adjust the tension of said spring. j

2. In a gas regulator, the combination of a casing having a cylindricalextension, and a valve seat, a diaphragm in said casing, gas inlet andoutlet ports above said diaphragm, a fluid pressure inlet port below thediaphragm, a valve mounted upon said diaphragm and having a stem, asleeve having a part threaded through the head of the cylindricalextension and through which the valve stem passes, a spring between saidguide sleeve and the valve, and means permitting adjustment of saidguide sleeve.

3. In a gas regulator, the combination of a casing having a cylindricalextension, and a valve seat,'a diaphragm in said casing, gas inlet andoutlet ports above said diaphragm, a fluid pressure inletport belowspacing block between said diaphragms, a

perforated ring between the peripheral portions of said diaphragms, avalve mounted on the upper diaphragm, a stem on said valve, a guidesleeve adjustably mounted in the casing, a spring between said sleeveand the valve, and a nut threaded on the upper end of the valve stem,and means for admitting pressure under the lower diaphragm.

5. In a gas regulator, the combination with a casing, having a valveseat therein, of two diaphragms spaced apart, a central spacing blockbetween said diaphragms and [lVGtGCl to one of them, a perforatedspacing ring between the peripheral portions of said diaphragms, a valveresting on the upper diaphragms over said spacing block, a springnormally pressing the valve away from its seat, and means for admittingpressure under. the lower diaphragm.

In testimony whereof, I have signed this specification in the presenceof two subscribing witnesses.

ERNEST G. OFELDT. Witnesses;

E. L. F. MGNULTY, W. U. SPROTT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C."

